Can anyone help with the actual number of Marder III's that were at Gazala? The game gives you 10 counters, some reports that Rommel had 112, other research shows 13 for 7/42, 18 for 9/42 and 24 for 11/42. An article in the General stated that 90th Light had a total of 56 76.2mm (r) guns for Gazala of which some had to be Marder IIIs.

The fact that there are 10 counters in the game does not imply that that is how many Rommel had. Each of your sources may actually be correct. Each would have to be evaluated. The Germans (and British) had several numbers for reporting strength. Authorized Strength was 'How many we are SUPPOSED TO HAVE', from that there were 'Available' (number that could theoretically be salvaged and returned to service) and 'Operational' (number that are functioning). Only a fraction of the available ones would be operational.Generally when a force is advancing it can salvage a (large) portion of the vehicles that were operationally knocked out during fighting. When supplies are low they may not be able to use all of the 'operationally available' units because they want each of the mobile units to be fully supplied for operations, ammunition and fuel, so they would not allocate the units that could not be supplied to the battle.

If you can find the actual TO&E for all of the units that would have Marders authorized, then you can determine the 'Maximum' that would be available under perfect conditions. Aside from that figure, the availability could vary day-by-day, and during battle, hour-by-hour.

The game represents situations for 30-second turns. So, the longest scenario in Tobruk is 20 minutes. Given that, and the scale of the game, the total number of Marders that Rommel had for that 20-minute period would be far less relevant than 'the number of operational Marders assigned to that particular operation'.

Also, the Tobruk scenarios are, in many cases, 'representative'. In other words, the total forces involved are not represented in the game, but rather the proportion of forces is correct.